build

zh-Hant/docs/chapter_heap/build_heap.md

@@ -220,7 +220,9 @@ comments: true
 
         /* 交換元素 */
         private fun swap(i: Int, j: Int) {
-            maxHeap[i] = maxHeap[j].also { maxHeap[j] = maxHeap[i] }
+            val temp = maxHeap[i]
+            maxHeap[i] = maxHeap[j]
+            maxHeap[j] = temp
         }
 
         /* 獲取堆積大小 */

zh-Hant/docs/chapter_heap/heap.md

@@ -650,7 +650,7 @@ comments: true
 
     /* 獲取父節點的索引 */
     int parent(MaxHeap *maxHeap, int i) {
-        return (i - 1) / 2;
+        return (i - 1) / 2; // 向下取整
     }
     ```